Ethan D. Hollander, M.D.
Family Medicine Physician · San Ramon, CA
Ethan D. Hollander, M.D. is a family medicine physician with a practice address in San Ramon, California, and NPI 1528003597, issued on Jun 16, 2006. Check the license (California A78030, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ethan D. Hollander
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A78030 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2305 Camino Ramon, San Ramon, CA 94583
- Phone
- (925) 837-1886
- Enumerated
- Jun 16, 2006
- Record last updated
- Jun 21, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (925) 837-3913
- Medicaid ID
- 00A780300 CA
- Medicare enrollment
- Enrolled (PECOS I20090318000525); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2000
- Entity
- Type 1 · individual
Also registered at 2305 Camino Ramon
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Inocencio Candelaria, M.D.Family Medicine Physician1174791677
- Jay Delaney, O.D.Optometrist1720086135
- Luisa DuranEndocrinology, Diabetes & Metabolism Physician1548437940
- Ralph Fong, M.D.Family Medicine Physician1447290994
- William Hamstra, D.O.Surgery Physician1306835723
- Mahmood Kazemi, M.D.Endocrinology, Diabetes & Metabolism Physician1104892264
Verify Ethan D. Hollander in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A78030Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average family medicine physician in 2024
636 Medicare Part D claims for 493 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 12 claims were for opioids.
Most prescribed
- Cephalexin81 claims
- Doxycycline Monohydrate62 claims
- Amoxicillin-Clavulanate Potass60 claims
- Albuterol Sulfate Hfa57 claims
- Paxlovid45 claims
- Azithromycin28 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- John Muir Physician NetworkWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
34 family medicine physician records list a practice address in San Ramon
They are 34 of the 2,281 NPPES records with a practice address in San Ramon, and 17,133 family medicine physician records in California.
All 34 in San Ramon → All 17,133 in California → Every provider in San Ramon →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Ethan D. Hollander, M.D.'s NPI number?
Ethan D. Hollander, M.D.'s National Provider Identifier (NPI) is 1528003597, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ethan D. Hollander, M.D. located?
The NPPES record lists a practice address at 2305 Camino Ramon, San Ramon, CA, 94583. Phone: (925) 837-1886. Providers update this record themselves, so call before visiting.
How can I verify Ethan D. Hollander, M.D.'s license?
NPPES lists California license number A78030, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ethan D. Hollander, M.D. prescribe under Medicare Part D?
In 2024, Ethan D. Hollander, M.D. had 636 Medicare Part D claims for 493 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Ethan D. Hollander, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.